This Romantic World Page 65 (Patreon)

As was demonstrated in the last build of the game, Parker makes a point to swallow all of the cum when she gives a blowjob to make sure none of it touches her skin and sets off her fetish. It usually works, except for when she's taken by surprise. To his credit, Shiro did try to warn her, he just couldn't get the words out in time. XD